1 Physical Properties
1.1 Tenacity
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.5 Fracture
Not Available
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
{001} Perfect
Fair in four directions forming octahedrons
1.7 Mohs Hardness
1.8 Chemical Composition
Mg 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references